  import {mapGetters} from 'vuex'

export default {
  computed:{
     ...mapGetters('m_cart',['total'] )
   },
   watch:{
     total(){
       this.setBadge()
     }
   }
   ,
   onShow() {
     this.setBadge()
   },
   methods:{
       setBadge(){
         uni.setTabBarBadge({
           index:2,
           text: this.total + ''
         })
     }
   },
}
